Racket is a set of tools for writing and running the PLT scheme
programming language. It includes a graphical IDE (drracket) that
features highlighting of the source of syntax and run-time errors,
support for multiple language levels, an algebraic stepper, objects,
modules, a GUI library, TCP/IP, and much more. It includes an
extensive, hyper-linked help system called Help Desk, available
from the Help menu, the plt-help command line tool, or through a
web browser.
The racket-textual port provides a text-only version of the Racket
environment without X11 dependencies.
WWW: http://racket-lang.org/

Upgrade to version 5.3.6.
Pending issues:
- Support for long doubles was disabled (does not build on 9.x.)
- Using readline/rep causes a core dump on SIGWINCH.
- Calls to (find-seconds 0 0 0 1 5 1970 #f) fail, so a bit of
documentation was cut out as it broke the build by using this
specific call.

Add the actual racket-textual port after repocopy. It provides a
text-only version of lang/racket, without X11 build dependencies.
A separate port is requires since racket-textual is actually a
different distfile upstream.